Home / 5,115.60-7,673.40-5,083.20

Finding the Fourth Proportional to 5,115.60, 7,673.40 and 5,083.20

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Solution

The fourth proportional to 5,115.60, 7,673.40 and 5,083.20 is: 7,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.60 : 7,673.40 = 5,083.20 : x
  2. Step 2: Convert to fraction form
    5,115.60/7,673.40 = 5,083.20/x
  3. Step 3: Cross multiply
    5,115.60x = 7,673.40 × 5,083.20
  4. Step 4: Simplify right side
    5,115.60x = 39,005,426.88
  5. Step 5: Solve for x
    x = 39,005,426.88/5,115.60
  6. Step 6: Final answer
    x = 7,624.80

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Half scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.